Sooner or later the Court will require your participation in the trial. As of yet, you may appoint an agent on your behalf to appear in the proceedings by means of a power of attorney. This agent could anyone from your friend or family circle. You lawyer can't be given the POA.
So, yes at this stage the only option for you is to appoint an agent on your behalf. If your mother or father volunteer to become your agent, that's the best bet for they will also be aware with the facts of your case.